Electric table stove



-April 21', 1925. w

. 1,534,823 H. A. ZIOLA ELECTRIC TABLE STOVE Fil'e Ap 25, 1924 sSheets-Sheet 1 H. A. ZIOLA ELECTRIC TABLE STOVE Fil ed April 2 1924April 21, 1925.

I s Sheets-Sheet 2 ll-ll.

April.21, 1925. 1,534,823

H. A. zloLA ELECTRIC TABLE STOVE v Filed April 25. 19 5 Sheets-Sheet 5Patented Apr. 21, 1925.

-UNiTED STATES PATENT OFFICE.

HENRY A. ZIOLA, OF TOLEDO, OHIO, ASSIGNOB TO THE SWARTZBAUGH MANUFACTUR-ING- COMPANY, OF TOLEDO, OHIO, A CORPOBATION OF OHIO.

ELECTRIC TABLE STOVE.

Application filed April 23, 1924. Serial No. 708,842.

To all whom it may concern Be it known that I, HENRY A. ZIOLA, a citizenof Austria, and a resident of Toledo, in the county of Lucas and Stateof Ohio, have invented a new and useful Elec tric Table Stove, whichinvention is fully set forth in the following specification.

This invention relates to electric cooking appliances, and particularlyto those of the table stove type.

The object of the invention is the provision of an appliance of thisclass which is simple, strong and durable in construction, is easy andinexpensive to manufacture, and has other advantages over appliances ofthis type heretofore used.

The invention is fully described in the following specification, andwhile in its broader aspect it is capable of embodiment in numerousforms, a preferred embodiment thereof is illustrated in the accompanyingdrawings, in which Figure 1 is a top plan view of an appliance embodyingthe invention. Figure 2 is a fragmentary sectional view thereof takenthrough the detachable handle. Figure 3 is a central vertical section onthe line 33 in Figure 1. Figure 4 is a bottom plan view of theappliance, with parts broken away. Figure 5 is a perspective view ofsome of the assembled frame portions of the appliance, with'parts brokenaway, and Figure 6 is an elevation of one of the legs of the appliancewith a control switch embodied therein and with the frame to which theleg is attached fragmentarily shown. 7

Referring to the drawings, 1 designates a ring-like frame part having adepending outer edge flange, and having a shallow' downwardly turned.inner edge flange 2, from which a plurality of equidistant spaced legs 3depend. Each leg 3 is provided with an inwardly turned foot portion 4,adapted to seat on the end of an adjacent arm of a three armed spider 5.Each foot 4 is provided at its free end with a tongue 6 which isintended to extend down through a registering opening 7 in theassociated spider arm, and to be bent under the arm to retain thespider. and ringl in assembled relation,

The spider 5 is formed along each side edge with a depending flange 8 toadd strength and rigidity to the spi er.

Each spider armis provided at itsouter end with a. down turned footportlon 9,

which seats on abottom plate 10, and has a tongue 11 projecting downthrough a registermg opening 12 in the plate and bent to prevent itsWithdrawal therefrom. The plate 10 is provided with an edge flange 13and is preferably formed with integral depressed portions 14 forstrengthening purposes. The frame parts 1, 5 and 10 are preferablystamped from sheet metal for the purpose of cheapness and lightness ofconstruction, and are retained in assembled relation without the use ofbolts or other retainmg means than the bendable tongues 6 and 11.

Three main supporting legs 15, which are also preferably stamped fromsheet metal, have their upper portions entering between the verticallyspaced edges of the plate 10 and outer flange of the frame 1, andextended up at the inner side of such flange'and secured thereto bybolts 16, or inany other suitable manner. The legs 15 extend at theirlower ends below the plate 10 and are braced by bracing bars 17, one ofwhich is bolted to the lower end of each leg at its inner side andextends inward and upward therefrom to a central bolt 18, which projects centrally through the" plate 10 and spider 5,,and secures theelectrical element within the frame 1. The bars 17 are preferablystamped from sheet metal.

The heating element comprises a disc-like plate 20of porcelain or othersuitable highly refractory insulatin customary top sur ace groove 21, inthe present instance, of spiral form, in which the electrical coil 22 ismounted. The insulating plate 20 is spaced from a bottom plate 23 by aheat insulating material 24, for instance asbestos, and a sheet metalband 25 encircles the peripheral edge of the plate 20 and has a lowerinturned flange 26, which extends under the marginal edge of the plate23 and supports the same. The upper edge of the band 25 is provided withbendable tongues 27, which engage over the edge of the insulating plate20 and serve to hold the material, and has the band in position toretain the bottom plate bolt 29, which retains the parts in assembledrelation. It is evident that the insulating plate 20,

heat insulating material 24 and 28, bottom plate 23 and band 25 form theheating unit which is mounted within the frame .1 and is removable as awhole therefrom. This unit is preferably slightly spaced from the innermarginal edge of the frame 1 to permit air circulation therebetween and'rests at its bottom on the feet 4 and spider 5. The central bolt 18asses down through the center of the heating unit and serves to retainit in the frame. A sleeve 30 encircles the bolt 18 in engagement at itsupper and lower ends with the central portions of the respective spider5 and frame plate 10 to brace the same when the bolt 18 is tightened. Asocket 31 for an attachment plug is mounted at its inner end on an edgeportion of the frame plate 10 between such plate and the frame member 1,and has its contact parts in suitable electrical connection with therespective portions of the coil 22, as is well understood in the art.

One feature of my invention consists in mounting the control switch forthe heater on one of the legs 15 of the frame. For this purpose one ofthe legs is provided with an enlarged cylindrical socket portion 32 inwhich the switch means 33 is disposed, such means being provided with acontrol handle or switch button 34, turnable to different positions tosecure different closed circuit heating conditions or to open thecircuit. Nothing is claimed for the switch mechanism itself, and it is,therefore, not shown in detail. The leg 15 which carries the controlswitch, in the present instance, is cast, while the other legs arestamped from sheet metal.

For the purpose of efficiency and safety each frame leg 15 is providedwith a foot piece 35 of electrical insulating material, which is securedwithin the channel of the leg by the associated bolt 36, which connectsthe outer end of the respective brace bar 17 to the leg.

37 designates a handle which is adapted to be detachably engaged withthe lower outer edge of the frame bar 1, and with the marginal edgeportion of the frame plate 10 to facilitate carrying the appliance whenhot. For this purpose the inner end portion of the handle is broadenedand provided with two laterally spaced portions 38, each having anupstanding tongue 39 at its upper end for engaging up back of the loweredge of the frame bar 1, and having at its lower end a notch 40 adaptedto receive the adjacent edge portions of the plate 10, as shown in Fig.2.

It is apparent that I have provided an exceedingly simple frameconstruction for appliances of the class described, the members of whichframe are formed from sheet metal,

and are secured together in a manner to eliminate the use of bolts orother separate securing means. It is also evident that the frame andsupporting legs thereof are of light but rigid and durable construction,and that the parts are so arranged as to facilitate the free circulationof air through the frame for cooling purposes. With my appliance it ispossible to quickly remove the heating unit from the frame and to easilyand quickly change the insulating plate 20- or heating element 22,should either become broken.

I wish it understood that my invention is not limited to any specificconstruction, arrangement or form of the parts as it is capable ofnumerous modifications and changes without departing from the spirit ofthe claims.

Having thus described my invention, what side of said member, a supportfor said legs,

means for detachably securing the legs to said support, and meansextending thru said supportfor removably connecting a heating unitthereto.

2. In an appliance of the class described, a rim member, depending legson said member, a spider forsupporting said legs, means for detachablysecuring said legs directly to said spider, and a single means extendingthru said support for removably connecting a heating unit thereto.

3. In an appliance of the class described, a .rim member, depending legson the inner side of said member, a support for said legs havingapertures, tongues on said legs arranged to extend thru said aperturesand be bent over thereby detachably to connect the rim member thereto,and a single means extending thru said support for removably connectinga heating unit thereto.

4. In an appliance of the class described, a frame comprising a ringmember having supporting legs, and having shorter legs depending fromits inner edge, a spider having its arms attached to said short legs andco-operating with the ring member to form a skeleton bottom socket, saidspider having reinforcing edge flanges, and an electrical heating unitmounted in said frame socket and removable as a whole therefrom.

5. In anappliance of the class described, a spider, a ring memberdisposed above and mounted on the ends of the spider arms andco-operatlng with the spider to. form a skeleton bottom socket, saidring member and spider having bendable tongue engagement, one with t eother, and an electrical heating unit mounted in said socket andremovable as a whole therefrom. is

6. In an appliance of the class described,

' ably mounted in said rim and curing tongues a spider, a ring memberdetachably connected to the arms of the spider and disposed.

thereabove', a bottom plate carried by the sp der in spaced relationbelow the same, sald spider, ring member and bottom plate forming aframe, and an electrical heating element removably mounted on the spiderwithin the ring member.

In an appliance of the class described, a rim having a depending outerwall, a spider, means includin a slot and tongue connection for detachaby securing the inner side of said rim to the spider, a bottom platebelow said spider and detachably secured thereto,-said spider, rim andbottom member cooperating to form a frame, and a heating unit removablyconnected to said spider. 8. In an appliance of the class described, aspider, a bottom plate in vertically spaced relation to said spider,supporting legs atthe ends of said spider having tongues arrangeddetachably to engage into apertures in said plate, a rim spaced abovesaid spider having depending legs, means for detachably securing saiddepending legs and h spider, main supporting legs connected to one ofsaid parts, and a heating unit removdetachably connected to said spider.

9. In an appliance of the class described, a bottom plate havingopenings therein, a spider disposed over the bottom plate in spacedrelation thereto, and having supporting legs projecting downward fromthe ends of its arms and rovided with bendable seor projecting throughthe plate openings, the spider arms having openmgs therein, a ringmember having legs depending therefrom and resting on the spider arms,and said legs having securing tongues projected through the spider armopenings,

- main supporting legs secured to one of said parts, andan electricalinsulating member removably mounted within the ring member over thespider. V

10. In an appliance of the class described, a frame, an electricalheating unit carried by the frame, supporting legs for the frame, and anelectrical control switch for the heating unit carried by one of saidlegs.

11. In an appliance of the class described, having a supporting leg witha socket therein, and an electrical control switch for the appliancemounted in the leg socket.

12. In an appliance of the class described, a frame comprising a bottomplate, a top ring member and an intermediate member secured together inspaced relation, the intermediate member and ring member cooperating toform a socket, an electrical heating unit mounted in the socket, a boltextending .down through the heating unit, bottom plate and intermediatemember to secure the same in assembled relation, and supporting legsattached to said frame.

13. In an appliance of the class described, a frame comprising a bottomplate, a top ring member and an intermediate member secured together inspaced relation, termediate member and ring member cooperating to form asocket, an electrical eatin unit mounted in the socket, a bolt extendingdown through the heating unit, bottom plate and intermediate member tosecure the same in assembled relation, supporting legs attached to saidframe, and bracing members connecting the lower ends of the legs to saidbolt.

14. In an appliance of the class described, an electrical heating unitcomprisin a refractory insulating plate, aheating e ement carried by theplate, a bottom plate, a heat insulating element between the refractoryand bottom plates, and a split band encircling the peripheral portionsof the two plates and heat insulating material, and having portionsengaging over and under the respective plates to retain the same inassembled relation, and means for drawin the ends of the band togetherto clamp the hand to the engaged parts.

In testimony whereof I have hereunto signed my name to this secification.

HE Y A. ZIOLA.

